Interfacing Superconducting Artificial Atoms with Propagating Photons
Prof. Yen-Hsiang Lin - Dept. of Physics, NTHU
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2020-10-26 12:10:00 ~
2020-10-26 13:30:00See event details for additional info.
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R36169, 1F, Dept. of Physics, Building of Science College, NCKU
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Interfacing Superconducting Artificial Atoms with Propagating Photons
Prof. Yen-Hsiang Lin - Dept. of Physics, NTHU
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DATE |
2020-10-26 |
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TIME |
12:10 |
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PLACE |
R36169, 1F, Dept. of Physics, Building of Science College, NCKU |
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FIELD |
Quantum Information Science |
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SPEAKER |
Prof. Yen-Hsiang Lin - Dept. of Physics, NTHU |
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TITLE |
Interfacing Superconducting Artificial Atoms with Propagating Photons |
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ABSTRACT |
One fundamental problem in quantum technology is how to interface highly-coherent qubits with photons. The common approach in superconducting artificial atom application is circuit quantum electrodynamics(cQED), which utilize a mediator degree of freedom in the form of a far-detuned cavity mode. In this talk, I will present a different “atomic clock” like approach which contains no extra cavity mode degree of freedom buffering the superconducting qubit from the readout environment. With a superconducting fluxonium artificial atom directly connected to a 1D transmission line, we simultaneously achieved a strong coupling of a high-frequency “cycling” readout transition to the traveling waves and a nearly complete suppression of the spontaneous emission of the low-frequency “clocking" qubit transition. Our system realizes the simplest possible interface between a highly-coherent superconducting qubit and propagating photons for constructing quantum communication networks and single photon detectors. |